<template>
  <view class="tui-upload__container">
    <view class="tui-upload-box">
      <view
        class="tui-image-item"
        :style="{ width: width + 'rpx', height: height + 'rpx' }"
        v-for="(item, index) in imageList"
        :key="index"
      >
        <image
          :src="item"
          class="tui-item-img"
          :style="{ width: width + 'rpx', height: height + 'rpx' }"
          @tap.stop="previewImage(index)"
          mode="aspectFill"
        ></image>
        <view
          v-if="!forbidDel"
          class="tui-img-del"
          @tap.stop="delImage(index)"
        ></view>
        <view v-if="statusArr[index] != 1" class="tui-upload-mask">
          <view class="tui-upload-loading" v-if="statusArr[index] == 2"></view>
          <text class="tui-tips">{{
            statusArr[index] == 2 ? '上传中...' : '上传失败'
          }}</text>
          <view
            class="tui-mask-btn"
            v-if="statusArr[index] == 3"
            @tap.stop="reUpLoad(index)"
            hover-class="tui-btn-hover"
            :hover-stay-time="150"
            >重新上传</view
          >
        </view>
      </view>
      <view
        v-if="isShowAdd"
        class="tui-upload-add"
        :style="{ width: width + 'rpx', height: height + 'rpx' }"
        @tap="chooseImage"
      >
        <view class="tui-upload-icon tui-icon-plus"></view>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: 'tuiUpload',
  emits: ['remove', 'complete'],
  props: {
    //展示图片宽度
    width: {
      type: [Number, String],
      default: 220
    },
    //展示图片高度
    height: {
      type: [Number, String],
      default: 220
    },
    //初始化图片路径
    value: {
      type: Array,
      default() {
        return []
      }
    },
    //删除图片前是否弹框确认
    delConfirm: {
      type: Boolean,
      default: false
    },
    //禁用删除
    forbidDel: {
      type: Boolean,
      default: false
    },
    //禁用添加
    forbidAdd: {
      type: Boolean,
      default: false
    },
    //服务器接口地址。当接口地址为空时，直接返回本地图片地址
    serverUrl: {
      type: String,
      default: ''
    },
    //限制数
    limit: {
      type: Number,
      default: 9
    },
    //original 原图，compressed 压缩图，默认二者都有
    sizeType: {
      type: Array,
      default() {
        return ['original', 'compressed']
      }
    },
    //album 从相册选图，camera 使用相机，默认二者都有。如需直接开相机或直接选相册，请只使用一个选项
    sourceType: {
      type: Array,
      default() {
        return ['album', 'camera']
      }
    },
    //可上传图片类型，默认为空，不限制  Array<String> ['jpg','png','gif']
    imageFormat: {
      type: Array,
      default() {
        return []
      }
    },
    //单张图片大小限制 MB
    size: {
      type: Number,
      default: 4
    },
    //文件对应的key，默认为 file
    fileKeyName: {
      type: String,
      default: 'file'
    },
    //HTTP 请求 Header, header 中不能设置 Referer。
    header: {
      type: Object,
      default() {
        return {}
      }
    },
    //HTTP 请求中其他额外的 form data
    formData: {
      type: Object,
      default() {
        return {}
      }
    },
    //自定义参数
    params: {
      type: [Number, String],
      default: 0
    }
  },
  data() {
    return {
      //图片地址
      imageList: [],
      //上传状态：1-上传成功 2-上传中 3-上传失败
      statusArr: []
    }
  },
  created() {
    this.initImages()
  },
  watch: {
    value(val) {
      if (val) {
        this.initImages()
      }
    }
  },
  computed: {
    isShowAdd() {
      let isShow = true
      if (
        this.forbidAdd ||
        (this.limit && this.imageList.length >= this.limit)
      ) {
        isShow = false
      }
      return isShow
    }
  },
  methods: {
    initImages() {
      this.statusArr = []
      this.imageList = [...this.value]
      for (let item of this.imageList) {
        this.statusArr.push('1')
      }
    },
    // 重新上传
    reUpLoad(index) {
      this.$set(this.statusArr, index, '2')
      this.change()
      this.uploadImage(index, this.imageList[index])
        .then(() => {
          this.change()
        })
        .catch(() => {
          this.change()
        })
    },
    /**
     * @param manual 是否手动上传
     **/
    change(manual = false) {
      let status = ~this.statusArr.indexOf('2') ? 2 : 1
      if (status != 2 && ~this.statusArr.indexOf('3')) {
        // 上传失败
        status = 3
      }
      this.$emit('complete', {
        status: status,
        imgArr: this.imageList,
        params: this.params,
        manual: manual
      })
    },
    toast(text) {
      text &&
        uni.showToast({
          title: text,
          icon: 'none'
        })
    },
    chooseImage: function () {
      let _this = this
      uni.chooseImage({
        count: _this.limit - _this.imageList.length,
        sizeType: _this.sizeType,
        sourceType: _this.sourceType,
        success: function (e) {
          let imageArr = []
          for (let i = 0; i < e.tempFiles.length; i++) {
            let len = _this.imageList.length
            if (len >= _this.limit) {
              _this.toast(`最多可上传${_this.limit}张图片`)
              break
            }
            //过滤图片类型
            let path = e.tempFiles[i].path

            if (_this.imageFormat.length > 0) {
              let format = ''
              // #ifdef H5
              let type = e.tempFiles[i].type
              format = type.split('/')[1]
              // #endif

              // #ifndef H5
              format = path.split('.')[path.split('.').length - 1]
              // #endif

              if (_this.imageFormat.indexOf(format) == -1) {
                let text = `只能上传 ${_this.imageFormat.join(',')} 格式图片！`
                _this.toast(text)
                continue
              }
            }

            //过滤超出大小限制图片
            let size = e.tempFiles[i].size

            if (_this.size * 1024 * 1024 < size) {
              let err = `单张图片大小不能超过：${_this.size}MB`
              _this.toast(err)
              continue
            }
            imageArr.push(path)
            _this.imageList.push(path)
            _this.statusArr.push('2')
          }
          _this.change()

          let start = _this.imageList.length - imageArr.length
          for (let j = 0; j < imageArr.length; j++) {
            let index = start + j
            //服务器地址
            if (_this.serverUrl) {
              _this
                .uploadImage(index, imageArr[j])
                .then(() => {
                  _this.change()
                })
                .catch(() => {
                  _this.change()
                })
            } else {
              //无服务器地址则直接返回成功
              _this.$set(_this.statusArr, index, '1')
              _this.change()
            }
          }
        }
      })
    },
    uploadImage: function (index, url, serverUrl) {
      let _this = this
      return new Promise((resolve, reject) => {
        uni.uploadFile({
          url: this.serverUrl || serverUrl,
          name: this.fileKeyName,
          header: this.header,
          formData: this.formData,
          filePath: url,
          success: function (res) {
            if (res.statusCode == 200) {
              //返回结果 此处需要按接口实际返回进行修改
              let d = JSON.parse(res.data.replace(/\ufeff/g, '') || '{}')
              //判断code，以实际接口规范判断
              if (d.code % 100 === 0) {
                // 上传成功 d.url 为上传后图片地址，以实际接口返回为准
                d.url && (_this.imageList[index] = d.url)
                _this.$set(_this.statusArr, index, d.url ? '1' : '3')
              } else {
                // 上传失败
                _this.$set(_this.statusArr, index, '3')
              }
              resolve(index)
            } else {
              _this.$set(_this.statusArr, index, '3')
              reject(index)
            }
          },
          fail: function (res) {
            _this.$set(_this.statusArr, index, '3')
            reject(index)
          }
        })
      })
    },
    delImage: function (index) {
      let that = this
      if (this.delConfirm) {
        uni.showModal({
          title: '提示',
          content: '确认删除该图片吗？',
          showCancel: true,
          cancelColor: '#555',
          confirmColor: '#eb0909',
          confirmText: '确定',
          success(res) {
            if (res.confirm) {
              that.imageList.splice(index, 1)
              that.statusArr.splice(index, 1)
              that.$emit('remove', {
                index: index,
                params: that.params
              })
              that.change()
            }
          }
        })
      } else {
        that.imageList.splice(index, 1)
        that.statusArr.splice(index, 1)
        that.$emit('remove', {
          index: index,
          params: that.params
        })
        that.change()
      }
    },
    previewImage: function (index) {
      if (!this.imageList.length) return
      uni.previewImage({
        current: this.imageList[index],
        loop: true,
        urls: this.imageList
      })
    },
    /**
     * 当属性serverUrl传空时，父级调用该方法一次性上传所有图片
     * @param serverUrl 服务器接口地址
     **/
    uploadAllImage(serverUrl) {
      if (!serverUrl) {
        this.toast('服务器接口地址不能为空！')
        return
      }
      let imageArr = [...this.imageList]
      const len = imageArr.length
      for (let i = 0; i < len; i++) {
        //如果是服务器地址图片则无需再次上传
        if (imageArr[i].startsWith('https')) {
          continue
        } else {
          this.$set(this.statusArr, i, '2')
          this.uploadImage(i, imageArr[i], serverUrl)
            .then(() => {
              if (i === len - 1) {
                this.change(true)
              }
            })
            .catch(() => {
              if (i === len - 1) {
                this.change(true)
              }
            })
        }
      }
    }
  }
}
</script>

<style scoped>
@font-face {
  font-family: 'tuiUpload';
  src: url(data:application/font-woff;charset=utf-8;base64,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)
    format('woff');
  font-weight: normal;
  font-style: normal;
}

.tui-upload-icon {
  font-family: 'tuiUpload' !important;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 10rpx;
}

.tui-icon-delete:before {
  content: '\e601';
}

.tui-icon-plus:before {
  content: '\e609';
}

.tui-upload-box {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
}

.tui-upload-add {
  font-size: 68rpx;
  font-weight: 100;
  color: #888;
  background-color: #f7f7f7;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.tui-image-item {
  position: relative;
  margin-right: 20rpx;
  margin-bottom: 20rpx;
}

.tui-image-item:nth-of-type(3n) {
  margin-right: 0;
}

.tui-item-img {
  display: block;
}

.tui-img-del {
  width: 36rpx;
  height: 36rpx;
  position: absolute;
  right: -12rpx;
  top: -12rpx;
  background-color: #eb0909;
  border-radius: 50%;
  color: white;
  font-size: 34rpx;
  z-index: 900;
}

.tui-img-del::before {
  content: '';
  width: 16rpx;
  height: 1px;
  position: absolute;
  left: 10rpx;
  top: 18rpx;
  background-color: #fff;
}

.tui-upload-mask {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40rpx 0;
  box-sizing: border-box;
  background-color: rgba(0, 0, 0, 0.6);
}

.tui-upload-loading {
  width: 28rpx;
  height: 28rpx;
  border-radius: 50%;
  border: 2px solid;
  border-color: #b2b2b2 #b2b2b2 #b2b2b2 #fff;
  animation: tui-rotate 0.7s linear infinite;
}

@keyframes tui-rotate {
  0% {
    transform: rotate(0);
  }

  100% {
    transform: rotate(360deg);
  }
}

.tui-tips {
  font-size: 26rpx;
  color: #fff;
}

.tui-mask-btn {
  padding: 4rpx 16rpx;
  border-radius: 40rpx;
  text-align: center;
  font-size: 24rpx;
  color: #fff;
  border: 1px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 26rpx;
}

.tui-btn-hover {
  opacity: 0.8;
}
</style>
